Centrifugal machine.



C. GROAT, E. GROASDALE & F. A. TOLHURST.

CENTRIFUGAL MACHINE.

APPLIGATION FILED D3013, 1910.

1,005,963. Patented Oct. 17, 1911.

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To all whom it'may concern:

Rensselaer and State of New York, and

FREDERICK A. TOL'HURST, a citizen of the. United States, residin in New York city,

county and State of ew York, have mvented certain new and useful Improve, ments in Centrifugal Machines, of which.

. these two members that are reversely curved the following is a specification.

The object of this invention is to provide an improved arrangement of supporting; means for machines that operate at a high? speed, and are, therefore, liable to impart an objectionable vibration to the machine itself, as well as to the place where it issupported, and adjacent portion of the:

, bottom of the cup member has its curvature 'Wlilh a radius considerably greater than the 75 building.

2 The construction is especially designed for; mechanism using a vertical drive shaft and with machines operating on the centrifw, gal principle for'the purpose of separatingwater and other liquids from solid Ina-1 sometimesj i a lateral vibration of the vertical shaft is terials, which machines oknown as hydro-extractors.

In the accompanying drawings representare ing modifications of our invention, Figure 1 3 is a vertical axial section, certain parts being 1 shown in elevation. Fig. 2 is a bottom view.

Fig. 3 is a-section enlarged through one of the supports, shown in Fig. 1. Figs. 4 and 5 show modified forms of the support shown in Fig. 3.

The invention is shown applied to a machine in the nature of a hydro-extractor, and comprises essentially a frame member or case 5, having sides 6 and a bottom 7.

At the center is a vertical shaft 8 that carrice the receptacle or basket 9, rotated at a high speed by suitable driving means for the shaft, such as a pulley-10 on the lower portion of the shaft. Machines of this character must be driven at a high speed, ranging from 450 to 2500 revolutions per minute, that usually results in an excessive and objectionable vibration being induced in the support upon which the machine rests.- In the present invention a supporting means is provided that permits a substantially universal shifting movement in a horizontal.

directiomand preferably a of such means are provided.

In the construction illustrated there is a j plurality of support-ing devices, '12, 1,3, and

Specification of Letter: Patent. Application filed wear is, 1910. Serial No. 591,125.

Patented Oct. 17, 1911.

, 14 that are shown arran ed in a circular Be it known that we, CHARLES GROAT and z g EDGAR CROASDALE, citizens of the United: States, residing at Troy, in thecounty of is a cup member 18, whose bottom 19 is formed convex of a curvature corresponding with that of the concave face 17, with which it engages; and with a top face 20 formed concave corresponding to the convex foot member 15, that rests therein,

as shown in Figs 1 and 3. Preferably the radius of curvature of the foot member resting in the concave top-face of the cup. The operation of this construction is as follows: U on the high speed being applied to the sha t and the basket or other member, 9

induced. But this is absorbed by means of the several cups that are shiftable in a substantlally horizontal direction, and such lateral movement will be thereby overcome and practically annihilated. At the same time the movement in any direction from the central position of the cups will have the effect of raising the center of gravity of the device and tend to limit thismovement and also to cause it to return to the normal lowermost position. This takes the place of springs or other elastic members tending to limit the shifting movement. There is therefore, nothing to become worn or to require adjustment, as with the use of springs or rubber.

In Fig. 4 is shown a slight modification of the foot member, comprising a foot 21 having its lower face 22 semi-spherical as 1.00 with the foot 15. The base member 23 is provided having its bottom face 26 also fiat. The upper face 27 of this cup member is concave to receive the convex foot memher 21.

In the modification shown in Fig. 5, a foot member 30 has its lower face 31 formed concave of comparatively long radius. The base member 32 has a fl bo om 33 and a concave top face 34 of comparatively long ra- 110 dius. VBet-ween these two opposed concave faces, 31 and 33 is located a supporting member having its. opposite sides formed convex, and of a less curvature than that of the concave face of the engaged member. Preferably a'ball or sphere 35 is interposed between these two faces, and such faces engaging the ball may have the same radius of curvature. The operation of these two modifications are the same as described with reference to Figs. 1 and 3.

The shaft 8 carrying a basket is shown mounted in a bearing 36 connected with the bottom member 7 of the casing, and also a bearing 37 extending downwardly from the bottom member 7. The pulley 10 is placed on the shaft intermediate these two bearings. This pulley is shown as driven by a belt 38, that passes around two guide pulleys 39 and 40, supported on a bracket 41 at the side of the machine. From these pulleys the belt may pass upward if desired.

.Having thus described our invention, what We claim-is 1. In a high speed machine mounting, having a vertically arranged rotating member, comprised of a machine frame and base, 5 a plurallty of rigidly attached supports on said base, a plurality of rigidly secured floor plates, one for each support, having horizontally movable members between said machine base supports and said floor plates to accommodate any lateral movement of said machine.

2. In a machine havin a member rotated said shaftlbeing supported by an upper and lower bearing inthe machine, and a belt pulley on the shaft located between saidv bearings.

3. In a machine having a member rotated on a vertical shaft, a'combinatlon of a series of supports, each formed in three parts, two

parts having engaging faces formed concave and convex, respectively, one part being rigidly attached to the base of said machine 1n seml-spherical engagement with the intermediate sliding piece, to permit sliding movement thereof in all lateral directions,

said shaft being supported byan upper and lower bearing in the machine, and a belt pulley on the shaft located between said bearings, and a pair of guide pulleys at the side of the machine in alinement with said pulley to guide the belt for the said pulley.

4. In a machine provided with a member rotatable on a vertical axis, a series of suports, each support comprising a foot memer having its lower end convex, and a cup member'havingits upper face concave to eeive said convex foot member. 5. In a machine provided with a member rotatable on a vertlcal axis, a series of supports, each support comprising a foot member having its lower end convex, and a cup member having its upper face concave to receive said convex foot member, said engaging faces having the same radius of curvature. I

6. The combination of a machine having a frame, a series of supporting devices, each comprising a foot member carriedby the frame 1 and having its bottom convex, a base member having its upper face formed concave, and a cup member having its lower face of the same curvature as the concave face of the base and supported thereon to'be shiftable over the base, the cup member having its upper face formed concave and of a curvature corresponding with the convex surface of the said foot member depending from the frame, whereby the cup member supports theframe and is permitted a substantially universalmovement by the sliding engagement of the said two pairs of concave and convex engaging surfaces.

.7. The combination of a machine having. a frame, a series of supporting devices, each comprising a foot member secured to the frame and having its bottom convex, a base member having its upper face formed concave with a comparatively large radius, and a cup member having its lower face of thefi same curvature as the concave face of the and corresponding with the convex surface of the said foot member depending from the frame, whereby the cup member supports the frame and is permitted a substantially universal movement by the sliding engagement of the said two pairs of concave and convex engaging surfaces, the curvature of the base member and the engaging face of the cup member being of different radius than the curvature of the upper face of the cup member and that of the engaging face of the depending foot member.

8. The combination of a machine having a frame, a series of supporting devices, each comprising a foot member secured to the frame and having its bottom convex, a base member having its upper face formed concave with a comparatively large radius, and a cup member having its lower face of the same curvature as the concave face of the base and supported thereon to be shiftable over the base, the cup member having its upper face formed concave and of a curvature corresponding with the convex surface ofzthe said foot member depending from the frame, whereby the cup member supports the frame and is permitted a substantially universal movement by the sliding engagement of the said two pairs of concave :nd convex engaging surfaces, the curvature of the base member and the engaging face of the cup member being of greater radius than the curvature of the upper face of the cup .member and that of the engaging face of the depending foot member and a cover plate 10 over the cup members.

CHARLES GROAT. EDGAR CROASDALE. FREDERICK A. TOLHURST.

Witnesses: 1

ARTHUR J. CADY JOHN FERGUSON. 

